Cozumel Island - Mexico

One of Mexico’s biggest islands, Cozumel, is located 20 km (12 miles) from the mainland, and 60 km (36 mi) south of Cancun. It’s a flat, limestone formation shaped like a holster, and punctured by tens of cenotes (water-filled holes), many with their own marine forms, which are an extra attraction for tourists and snorkellers [...]